# 190+ Computer Graphics (for MCA) Solved MCQs

Chapters

70
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Chapter: Unit 1
1.

## DDA stands for

A. Digital Decision Analysis
B. Decision Divide Analysis
C. Digital Differential Analysis
D. Digital Differential Analyzer
2.

## DDA algorithm used for the

A. Draw a rectangle
B. Draw a circle
C. Draw a polygon
D. Draw a line
3.

A. Coloring in
B. Preparing
C. Selecting
D. Removing
4.

A. Fruit
B. Leaf
C. Picture
D. Seed
5.

## To determine the points inside the polygon this test is used

A. Inside test
B. Side by side test
C. Over test
D. Outside test
6.

## To modify the graphics in coded numbers ______________ is used.

A. Transport
B. Transfer
C. Transformation
D. Relation
7.

A. Rotation
B. Translation
C. Scaling
D. Reflection
8.

A. Scaling
B. Rotation
C. Reflection
D. Translation
9.

A. Scaling
B. Rotation
C. Translation
D. Skewing
10.

## When two or more transformation are carried out together then it is called.

A. Concluding transformation
B. Composite transformation
C. all
D. none
11.

A. Object model
B. Image model
C. Object space
D. Image space
12.

A. 0100
B. 0000
C. 1111
D. 1010
13.

## Cohen-Sutherland algorithm used for

A. Polygon clipping
B. Graph colouring
C. Line clipping
D. 3D modeling
14.

## Sutherland-Hodgeman algorithm used for

A. Polygon clipping
B. Graphical representation
C. 3D modeling
D. None
15.

## Interactive computer graphics uses various kind of input devices such as

A. Mouse
B. Graphic tablet
C. Joystick
D. All of these
16.

## Input function are used for

A. Control the data flow from these interactive devices
B. Process the data flow from these interactive devices
C. Both a & b
D. None of these
Answer» C. Both a & b
17.

A. Convex
B. Pixel
C. Concave
D. bitmap
18.

## In Bresenham's line generation algorithm, the initial value of the decision parameter as p0 = __________, where slope MOD (m) < 1.

A. 2Δy – Δx
B. 2Δy – 2Δx
C. Δx – Δy
D. None of the above
19.

## If a line whose end point is (10, 12) and start point is (20, 20), then slope m =?

A. 1.2
B. 0.8
C. -0.4
D. None of the above
20.

## Which is not an interactive device?

A. Keyboard
B. Mouse
C. CRT Monitor
D. None of the above
21.

## The Cartesian slope-intercept equation for a straight line is ________________.

A. y = m(a+b+c)
B. y = m.x + b
C. y = 2∆x-m
D. None of the above
Answer» B. y = m.x + b
22.

## A polygon having vertices P1, P2 ,… Pn is said to be ____________ oriented if a tour of the vertices in the given order produces an anticlockwise loop.

A. Positive
B. Negative
C. Register
D. None of the above
23.

## Most of our drawing algorithm use-

A. Incremental Method
B. Decrement Method
C. Multiplier Method
D. None
24.

## In our computer we follow

A. Left handed coordinate system
B. Right handed coordinate system
C. Cartesian Coordinate system
D. None
Answer» A. Left handed coordinate system
25.

A. Rasterization
B. Factorization
C. Randomization
D. None
26.

A. Aliasing
B. Anti-aliasing
C. Sampling
D. None
27.

A. Raster
B. Error Team
C. Line
D. None
28.

A. Dithering
B. Pixel Phasing
C. Filtering
D. None
29.

A. pixel array
B. pixels
D. None
30.

## In CRT, the electron intensity is adjusted using .................

A. Accelerating anode
B. Control grid
C. Electron gun
D. Focusing anode
31.

## Lower persistence phosphorus is used in

A. Animation
B. Simple object
C. Complex object
D. All of these
32.

A. Resolution
B. Dot Pitch
C. Pixel Depth
D. ppi
33.

## Identify the odd one out from the following

A. Frame Buffer
B. Pixmap
C. Display program
D. Refresh Buffer
34.

## The purpose of refreshing a CRT is ..........................

A. To avoid flickering
C. To avoid fading of pixels
D. All of the above
Answer» D. All of the above
35.

A. Rotation
B. Replacement
C. Translation
D. Scaling
36.

## The translation distances (dx, dy) is called as

A. Translation vector
B. Shift vector
C. Both a and b
D. Neither a nor b
Answer» C. Both a and b
37.

A. Rotation
B. Shearing
C. Translation
D. Scaling
38.

## A circle, if scaled only in one direction becomes a ?

A. Hyperbola
B. Ellipse
C. Parabola
D. remains a circle
39.

A. (2,-4)
B. (-2,4)
C. (-4,-2)
D. All of above
40.

A. Resolution
B. Dot Pitch
C. Pixel Depth
D. ppi
41.

## DVST stands for ..........................

A. Digital View Storing Table
B. Direct Visual Storage Tube
C. Direct View Storage Tube
D. Digital View Storage Tube
Answer» C. Direct View Storage Tube
42.

A. Translation
B. Scaling
C. Rotation
D. All of these
43.

## What are the components of Interactive computer graphics

A. A digital memory or frame buffer
B. A television monitor
C. An interface or display controller
D. All of these
44.

A. X max ,y max
B. Xmax/2,ymax/2
C. Xmax/3,ymax/3
D. None of these
45.

A. Line
B. Segment
C. Point
D. None of these
46.

A. Translation
B. Scaling
C. Rotation
D. Reflection
47.

A. Translation
B. Shear
C. Reflection
D. Clipping
48.

A. Clipping
B. Morphing
C. Reflection
D. Shear
49.

A. Square
B. Polygon
C. Rectangle
D. None
Chapter: Unit 2
50.

## We need to represent curves & surfaces when

A. We want to model existing objects
B. While modeling from scratch
C. Both a & b
D. None of the above
Answer» C. Both a & b
51.

## The representations for surface modeling include.

A. Polygon mesh
B. Parametric surfaces
D. All of the above
Answer» D. All of the above
52.

A. f(x,y,z) = 0
B. f(x) = 0
C. f(y) = 0
D. f(z) = 0
53.

## In explicit representation each polygon is represented by list of

A. Vertex coordinates
B. Edge coordinates
C. Vertex and Edge both
D. None of the above
54.

## In pointers to vertex list

A. Each vertex is stored once
B. Each vertex is stored twice
C. Vertex is not stored
D. Edges are stored
Answer» A. Each vertex is stored once
55.

## In case of explict functions the functions are equal to

A. y = f(x)
B. z = g(x)
C. None of the above
D. Both a & b
Answer» D. Both a & b
56.

## The value of x,y,z in case of parametric representation of curves is

A. x(t)
B. y(t)
C. z(t)
D. All of the above
Answer» D. All of the above
57.

A. 1 to 0
B. 0 to 1
C. 0 to ∞
D. ∞ to 0
58.

## If two curve segments join together the curve has

A. G 1 continuity
B. G 0 continuity
C. G 2 continuity
D. G 3 continuity
59.

## If tangent vectors of two cubic curve segments are equal the curve has

A. C 1 continuity
B. C 0 continuity
C. C 2 continuity
D. None of the above
60.

## A joystick is a

A. Graphics input device
B. Graphics output device
C. Both a & b
D. None of these
61.

A. One more than
B. One less than
C. Two less than
D. None of these
62.

A. Method
B. Equation
C. Point
D. None of these
63.

A. Two axes
B. Three axes
C. Both a & b
D. None of these
64.

A. Bezier
B. Ellipsoid
C. Shearing
D. None of these
65.

## Sp line curve can be either

A. Bezier sp line
B. B sp line
C. Both a & b
D. None of these
Answer» C. Both a & b
66.

## Bezier sp line always passes through

A. First and second control point
B. Does not pass from First and second control point
C. Both a & b
D. None of these
Answer» C. Both a & b
67.

## The Bezier curve obtained from the four control points is called a

A. Square Bezier curve
B. Cubic Bezier curve
C. Hectare Bezier curve
D. Rectangle Bezier curve
68.

## The shape of a Bezier curve primarily depends upon the

A. Position of control points
B. Distance of control points
C. Position of control panel
D. None of these
Answer» A. Position of control points
69.

## The no of control points in a Bezier curve ensures the

A. Jaggies of curve
B. Smoothness of curve
C. Straightness of curve
D. None of these
70.

A. Higher
B. Lower
D. None of these
71.

## ______is one of the function that is used to specify a single plane surface

A. Meta-ball model
B. Fill area
C. Reflection
D. None of these
72.

## Meta-ball is used to describe

A. Simplest object
B. Complex object
C. Composite object
D. None of these
73.

## Super quadrics is a class of object that contain

A. Data
B. Codes
C. Both a & b
D. None of these
Answer» C. Both a & b
74.

A. Stretching
B. Snapping
C. Contracting
D. All of these
75.

A. Unit
B. Normal
C. Double
D. None
76.

## Bezier curve is tangent to the lines connecting _____________.

A. First two points
B. Last two points
C. Fist two points and last two point
D. None of the given
Answer» C. Fist two points and last two point
77.

## A parametric curve is one whose defining equations are given in terms of a -------------, common, independent variable called the parametric variable.

A. Triple
B. Double
C. Single
D. None of the given
78.

## To ensure a smooth transition from one section of a piecewise __________ to the next, we can impose various continuity conditions at the connection points

A. non parametric curve
B. parametric curve
C. polygon vector
D. None of these
79.

A. 2
B. 4
C. 8
D. 6
80.

A. 2
B. 4
C. 6
D. 8
81.

## ............... refer to the shapes created by union, intersection and difference of given shapes

A. Wire frame model
B. Composite transformation
C. Constructive solid geometry methods
D. None
Answer» C. Constructive solid geometry methods
82.

## The operation that is used for repositioning the object is called

A. Rubber band method
B. Gravity method
C. Dragging
D. None
83.

## Which method are used to construct and position the straight lines, arcs and circles etc.

A. Rubber band method
B. Gravity method
C. Dragging
D. None of these
84.

## Identify the methods for Constructive Solid Geometry operations

A. Ray casting
B. Ray tracing
C. Beam penetration
D. Ray sorting
85.

## ........................... solid representation takes advantage of spatial coherence to reduce the storage representations.

A. Sweep representation
B. Octree
C. Polygon surfaces
D. CSG
86.

A. Voxel
B. Void
C. Tex
D. Flag
87.

A. int
B. void
C. null
D. empty
88.

## In a clipping algorithm of Cohen & Sutherland using region codes, a line is already clipped if the ?

A. codes of the end point are same
B. logical AND of the end point code is not 0000
C. logical OR of the end points code is 0000
D. A and B
89.

## The subcategories of orthographic projection are ?

A. cavalier, cabinet, isometric
B. cavalier, cabinet
C. isometric, dimetric, trimetric
D. isometric, cavalier, trimetric
90.

A. Constraints
B. Grid
C. Gravity field
D. None of these
91.

A. Bezier
B. Ellipsoid
C. Shearing
D. None of these
92.

## We translate a two-dimensional point by adding

A. Translation distances
B. Translation difference
C. X and Y
D. Only a
93.

## B-splines can be used for which of the following

A. Curve-fitting and numerical differentiation of experimental data.
B. approximation
C. numerical transformation
D. none of the above
Answer» A. Curve-fitting and numerical differentiation of experimental data.
94.

## A B-spline of order n is a piecewise polynomial function of degree ________ in a variable x

A. (a)less than n
B. greater than n
C. (c)equal to n
D. (d)none of these
95.

A. m+n - 1
B. m-n-1
C. m+n+1
D. n-m+1
96.

## Second order parametric continuity(C2 continuity) means that both ____and____ parametric derivatives of the two curves are same at the intersection

A. second and third
B. first and second
C. second and third
D. third and fourth
Chapter: Unit 3
97.

## How many basic method of projection

A. Four
B. Two
C. More than three
D. One
98.

## Lines of projection coverage at a single point called

A. Centre of attraction
B. Centre of projection
C. Line of projection
D. None
99.

## Select the perspective anomalies from the following:

A. Perspective foreshortening
B. Perspective increasing
C. Centre of projection
D. Vanishing point
100.

## Difference between parallel and perspective projection lies in the

A. Centre of attraction
B. Centre of projection
C. Line of control
D. None